Mitchell Corporation has accumulated the following data for the mixed cost of vehicle operations. Miles Driven Total Cost January 10,000 $17,000 February 8,000 13,500 March 9,000 15,400 April 7,000 12,500 May 7,100 12,400 June 8,800 14,900 a) Compute the variable and fixed cost elements using the high-low method. b) Calculate the estimated cost if 12,000 miles are driven